Why is a cast required for byte subtraction in C#?

 

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  • byte + byte = int… why? 15 answers

    • Because subtraction is coercing up to an integer. As I recall, byte is an unsigned type in C#, so subtraction can take you out of the domain of bytes.

    这是因为字节减法的结果不适合一个字节： 

    byte - byte = (0..255) - (0..255) = -255..255

    字节上的算术结果默认为一个int值。

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